One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,12)(3,9,13,14)(4,10,15,16)(5,11,6,8)(17,18)(19,22)(20,23)(21,24)(25,28)(26,30)(27,29)(31,32)(2,8)(4,14)(5,6)(9,15)(10,16)(11,12)(17,19)(18,22)(20,27)(21,26)(23,29)(24,30)(25,31)(28,32) involution — undirected(1,3,7,13)(2,9,12,14)(4,8,15,11)(5,16,6,10)(18,23)(20,28)(22,29)(24,25)(27,32)(30,31)(1,4,7,15)(2,10,12,16)(3,8,13,11)(5,14,6,9)(18,24)(22,30)(23,25)(29,31)(1,5,7,6)(2,8,12,11)(3,10,13,16)(4,14,15,9)(19,26)(22,30)(27,32)(29,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.